My Wii has crashed with the error "The system files are corrupted. Please refer ..."

I can't format, I can't update, the message appears at the startup BUT i've found a way to bypass it (but I still can't update from the web, can't format, can't play games, I just can see the menu and use it)

I should say, I'm not quite sure what update it is, maybe it just adds usb mic support, but it fixed my settings menu.

The reason i say this is because my settings menu says 2.1e which was what the failed mario strikers update should have taken it to. So I don't think it's an actual 3.0 update, but it should still help with your problems.

And I did the 15 sec Metroid 3 update trick after that and it worked fine.